radio antenna AUDI A4 1999 B5 / 1.G Radio OBD Workshop Manual

01-13

DTC
Possible cause
Corrective action
VAG1551 Scan Tool
display
00856
Radio Antenna

Short circuit
Open circuit
Open circuit in wiring
Short circuit in antenna wire
Electrical Wiring Diagrams, Troubleshooting &
Component Locations - Trace malfunction using wiring diagram.
- Check antenna wire.
01044
Control Module incorrectly
coded
Radio not coded to match
configuration in vehicle - Code radio according to vehicle.
65535
Control Module
Malfunctioning Radio faulty- Replace radio.
Pa
ge 14 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-19

Code Control Module (scan tool function
07)

This function is used to code the radio for the
following:
Radio configuration
Sound system
Number of passive loudspeakers
Country identification

Notes:
The coding procedure is used to set the various
radio configuration options.
The coding table only gives the combinations
that are available for the Audi A4.
The term "antenna with remote power supply"
refers to active antennas (e.g. rear window
antennas) which are powered via the HF cable.
The coding must always correspond to the
equipment installed in the vehicle.
Pa
ge 20 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-22
Radio coding table 5
4
3
2
1
Decimal places of byte coding on scan tool display

7
Radio configuration
Antenna with remote power supply CD changer unit Secondary display

1 X - -

3 X X -

5 X - X

7 X X X

X = component installed - = not installed
Pa
ge 23 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-26

Summary of display groups

Display group
No. Indicated on display
001 1 = Speed signal from
speedometer
2 = Battery Positive Voltage
(B+), terminal 30
3 = Radio illumination dimming
in %
4 = S-contact status
002 1 = Front loudspeakers
2 = Front loudspeakers status
3 = Rear loudspeakers
4 = Rear loudspeakers status
003 1 = Type of antenna
2 = Antenna
3 = Antenna status
004 1 = Active speaker control
output
3 = Telephone
Pa
ge 27 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1

01-29
Display group 003

Read Measuring Value Block 3

Indicated on display

active Antenna OK






Antenna status
OK Short circuit Open circuit

Antenna

Antenna type

Passive
Active (e.g. rear window antenna)

Pa
ge 31 of 34 Radio, On Board Dia
gnostic
(OBD
) (m.
y. 1998 [micro]
)
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.EE02.01.1